<template>
	<el-form size="small">
		<el-form-item>
			<el-radio v-model="radioValue" :label="1">
				小时，允许的通配符[, - * /]
			</el-radio>
		</el-form-item>

		<el-form-item>
			<el-radio v-model="radioValue" :label="2">
				周期从
				<el-input-number v-model="cycle01" :min="0" :max="22" /> -
				<el-input-number v-model="cycle02" :min="cycle01 ? cycle01 + 1 : 1" :max="23" /> 小时
			</el-radio>
		</el-form-item>

		<el-form-item>
			<el-radio v-model="radioValue" :label="3">
				从
				<el-input-number v-model="average01" :min="0" :max="22" /> 小时开始，每
				<el-input-number v-model="average02" :min="1" :max="23 - average01 || 0" /> 小时执行一次
			</el-radio>
		</el-form-item>

		<el-form-item>
			<el-radio v-model="radioValue" :label="4">
				指定
				<el-select v-model="checkboxList" clearable placeholder="可多选" multiple style="width:100%">
					<el-option v-for="item in 24" :key="item" :value="item-1">{{ item-1 }}</el-option>
				</el-select>
			</el-radio>
		</el-form-item>
	</el-form>
</template>

<script>
    export default {
        data() {
            return {
                radioValue: 1,
                cycle01: 0,
                cycle02: 1,
                average01: 0,
                average02: 1,
                checkboxList: [],
                checkNum: this.$options.propsData.check
            };
        },
        name: 'CrontabHour',
        props: {
            check: {
                type: String,
                default: ''
            },
            cron: {
                type: String,
                default: ''
            }
        }, // ['check', 'cron'],
        methods: {
            // 单选按钮值变化时
            radioChange() {
                switch (this.radioValue) {
                case 1:
                    this.$emit('update', 'hour', '*');
                    break;
                case 2:
                    this.$emit('update', 'hour', this.cycleTotal);
                    break;
                case 3:
                    this.$emit('update', 'hour', this.averageTotal);
                    break;
                case 4:
                    this.$emit('update', 'hour', this.checkboxString);
                    break;
                }
            },
            // 周期两个值变化时
            cycleChange() {
                if (this.radioValue === 2) {
                    this.$emit('update', 'hour', this.cycleTotal);
                }
            },
            // 平均两个值变化时
            averageChange() {
                if (this.radioValue === 3) {
                    this.$emit('update', 'hour', this.averageTotal);
                }
            },
            // checkbox值变化时
            checkboxChange() {
                if (this.radioValue === 4) {
                    this.$emit('update', 'hour', this.checkboxString);
                }
            }
        },
        watch: {
            'radioValue': 'radioChange',
            'cycleTotal': 'cycleChange',
            'averageTotal': 'averageChange',
            'checkboxString': 'checkboxChange'
        },
        computed: {
            // 计算两个周期值
            cycleTotal: function() {
                const cycle01 = this.checkNum(this.cycle01, 0, 22);
                const cycle02 = this.checkNum(this.cycle02, cycle01 ? cycle01 + 1 : 1, 23);
                return cycle01 + '-' + cycle02;
            },
            // 计算平均用到的值
            averageTotal: function() {
                const average01 = this.checkNum(this.average01, 0, 22);
                const average02 = this.checkNum(this.average02, 1, 23 - average01 || 0);
                return average01 + '/' + average02;
            },
            // 计算勾选的checkbox值合集
            checkboxString: function() {
                const str = this.checkboxList.join();
                return str === '' ? '*' : str;
            }
        }
    };
</script>
